Fault Messages. Descriptions And Actions - Power Electronics V5 Series Getting Started Manual

8. FAULT MESSAGES , DESCRIPTIONS AND ACTIONS.
When a fault occurs, the V5 will stop the motor and will display the fault that caused the trip. The red LED and fault
message will remain until the fault has been removed and the soft starter is reset. To reset the V5 either press the
(Stop/Reset) key or operate an external reset, by opening a normally closed contact (NC), configured to any of the
digital inputs of the V5.
Fault
Description
Possible Cause
Action
Fault
Description
Possible Cause
Action
Fault
Description
Possible Cause
Action
Fault
Description
Possible Cause
Action
Fault
Description
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Action
Fault
Description
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Action
Fault
Description
Sense level
Possible Cause
Action
POWER ELECTRONICS V5 Operation Instructions
24
F0 NO FAULTS
No fault detected.
Normal operation.
None required.
F1 PHA MISING
Supply phase loss.
Loss of phase, fuse failure, cable fault, motor winding fault.
Check supply, all cables, motor.
If the problem persists, call Power Electronics or an authorised distributor.
F2 WRONG PH / SQ
Incorrect input supply phase sequence.
The mains phase sequence doesn't correspond to G3.1 (1 PHASE SEQUEN=2)
Swap two input phase over or change G3.1 Phase Sequence to suit supply phase sequence.
F3 ASYM CURR
Phase current imbalance.
There is a current imbalance higher than 40%.
Check the motor; check the load and the coupling between both. Check input power
supply is always balanced. Check thyristors.
If the problem persists, call Power Electronics or an authorised distributor.
F4 OVER LOAD.
Calculated motor overload has reached an unacceptable level.
Motor overload. If the trip is produced during start, it could be a mechanical problem. If it
occurs when the motor is running at nominal speed, probable causes could be a wrong
setting at G.3.2. screen or a change of the load conditions.
Wrong nameplate values.
Check that current from the G3.2 screen is the same as the motor. Check working
conditions of motor. Check load.Check nameplates.
If the trip is occurring during the start:
Check mechanical conditions. Check there is not a power input supply voltage drop
greater than 10%.
Increase acceleration ramp (high inertia applications). Increase overload curve in G3.3
screen. Increase current limit.
F5 UNDER LOAD.
Motor under load.
Motor current draw is lower than that set in G3.6 screen. Soft starter has been working
during for longer than the one set in G3.7 screen.
Motor working with no load.
Wrong setting of under load conditions.
Check that mechanical parts coupled to the motor are ok and that the motor is not working
unloaded.In case of pump application, check there is no air inside the pipe network and
that the pump suction is not obstructed. Wrong adjustment, set again under load settings
G3.6 and G3.7.
F6 PEAK CURR
V5 peak current output exceeded. The current is higher than six times nominal.
(6xIn). V5 Rated Current.
Rotor locked. Short circuit in output circuit. V5 current transformers failure. Torque pulse
setting too high.
Check cables and motor. Reduce Torque pulse setting.
If the problem persists, call Power Electronics or an authorised distributor.
V5IM01BI